Which of the following correctly describes the structure of a route distinguisher?

A 6-byte value that is used as a BGP community

An 8-byte value that is prepended to the IP prefix

A 16-byte value that replaces the IP prefix

A 4-byte value that is appended to the IP prefix

What is the primary purpose of a route distinguisher (RD) in a Layer 2 VPN?

To identify the customer edge device

To specify the next-hop router for the VPN route

To make VPN prefixes unique across different VPNs

To control the import and export of routes between VRFs

A network engineer is configuring a Layer 2 VPN and needs to ensure that the NLRI carries the correct information for the VPN-IPv4 prefix. What is the correct format of the NLRI for a Layer 2 VPN route?

Route distinguisher + IPv4 prefix

A network engineer is configuring a new Layer 2 VPN service on a PE router. The customer has two separate VPNs that use overlapping MAC addresses. The engineer needs to ensure that the BGP table can distinguish routes from these two VPNs. What should the engineer configure?

Different route targets for each VPN.

Different VRF names on each PE.

Different route distinguishers for each VPN.

Different NLRI types for each VPN.

What is the role of route targets (RTs) in a Layer 2 VPN?

To encrypt the VPN traffic between PE routers

To make VPN prefixes unique across different VPNs

To control the import and export of routes between VRFs

To specify the next-hop router for the VPN route

Juniper NetworksCertified Professional, Service Provider Routing and Switching (JNCIP-SP)

Domain 7Objective 2

NLRI, Route Distinguishers, and Route Targets JN0-664 Practice Questions (Page 2)

Part of the Layer 2 VPNs domain, which makes up ~16% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–10 in this domain), expect 1–1 from this objective — we provide 13 practice questions to prepare you well beyond it. (estimate)

13questions here

3free pages

4concepts

Questions 6–10

6foundation · easy
Which of the following correctly describes the structure of a route distinguisher?
Select an answer first
7foundation · easy
What is the primary purpose of a route distinguisher (RD) in a Layer 2 VPN?
Select an answer first
8application · medium
A network engineer is configuring a Layer 2 VPN and needs to ensure that the NLRI carries the correct information for the VPN-IPv4 prefix. What is the correct format of the NLRI for a Layer 2 VPN route?
Select an answer first
9application · medium
A network engineer is configuring a new Layer 2 VPN service on a PE router. The customer has two separate VPNs that use overlapping MAC addresses. The engineer needs to ensure that the BGP table can distinguish routes from these two VPNs. What should the engineer configure?
Select an answer first
10foundation · easy
What is the role of route targets (RTs) in a Layer 2 VPN?
Select an answer first

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